1 /* $NetBSD: mbavar.h,v 1.13 2008/10/16 12:47:22 hans Exp $ */ 2 /* 3 * Copyright (c) 1994 Ludd, University of Lule}, Sweden 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed at Ludd, University of Lule}. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/device.h> 33 #include <machine/scb.h> 34 35 #define MBCR_INIT 1 36 #define MBCR_IE (1<<2) 37 #define MBDS_DPR (1<<8) 38 #define MBSR_NED (1<<18) 39 #define MBDT_MOH (1<<13) 40 #define MBDT_TYPE 511 41 #define MBDT_TAP (1<<14) 42 43 #define CLOSED 0 44 #define WANTOPEN 1 45 #define RDLABEL 2 46 #define OPEN 3 47 #define OPENRAW 4 48 49 #define MAXMBADEV 8 /* Max units per MBA */ 50 51 /* 52 * Devices that have different device drivers. 53 */ 54 enum mb_devices { 55 MB_UK, /* unknown */ 56 MB_RP, /* RM/RP disk */ 57 MB_TU, /* TM03 based tape, ex. TU45 or TU77 */ 58 MB_MT /* TU78 tape */ 59 }; 60 61 /* 62 * Current state of the adapter. 63 */ 64 enum sc_state { 65 SC_AUTOCONF, 66 SC_ACTIVE, 67 SC_IDLE 68 }; 69 70 /* 71 * Return value after a finished data transfer, from device driver. 72 */ 73 enum xfer_action { 74 XFER_RESTART, 75 XFER_FINISH 76 }; 77 78 /* 79 * Info passed do unit device driver during autoconfig. 80 */ 81 struct mba_attach_args { 82 int ma_unit; 83 int ma_type; 84 const char *ma_name; 85 enum mb_devices ma_devtyp; 86 bus_space_tag_t ma_iot; 87 bus_space_handle_t ma_ioh; 88 }; 89 90 /* 91 * Common struct used to communicate between the mba device driver 92 * and the unit device driver. 93 */ 94 struct mba_device { 95 STAILQ_ENTRY(mba_device) md_link; /* linked list of runnable devices */ 96 void (*md_start)(struct mba_device *); 97 /* Start routine to be called by mbastart. */ 98 int (*md_attn)(struct mba_device *); 99 /* Routine to be called after attn intr */ 100 enum xfer_action (*md_finish)(struct mba_device *, int, int *); 101 /* Call after xfer finish */ 102 void *md_softc; /* Backpointer to this units softc. */ 103 struct mba_softc *md_mba; 104 struct bufq_state *md_q; /* queue of I/O requests */ 105 }; 106 107 struct mba_softc { 108 device_t sc_dev; 109 bus_space_tag_t sc_iot; 110 bus_space_handle_t sc_ioh; 111 STAILQ_HEAD(,mba_device) sc_xfers; 112 struct evcnt sc_intrcnt; 113 enum sc_state sc_state; 114 struct mba_device *sc_md[MAXMBADEV]; 115 }; 116 117 struct mbaunit { 118 int nr; 119 const char *name; 120 enum mb_devices devtyp; 121 }; 122 123 /* Common prototypes */ 124 void mbaqueue(struct mba_device *); 125 126